## Conversion formula

The conversion factor from grams to kilograms is 0.001, which means that 1 gram is equal to 0.001 kilograms:

1 g = 0.001 kg

To convert 40 grams into kilograms we have to multiply 40 by the conversion factor in order to get the mass amount from grams to kilograms. We can also form a simple proportion to calculate the result:

1 g → 0.001 kg

40 g → M(kg)

Solve the above proportion to obtain the mass M in kilograms:

M(kg) = 40 g × 0.001 kg

M(kg) = 0.04 kg

The final result is:

40 g → 0.04 kg

We conclude that 40 grams is equivalent to 0.04 kilograms:

40 grams = 0.04 kilograms

## Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 kilogram is equal to 25 × 40 grams.

Another way is saying that 40 grams is equal to 1 ÷ 25 kilograms.

## Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that forty grams is approximately zero point zero four kilograms:

40 g ≅ 0.04 kg

An alternative is also that one kilogram is approximately twenty-five times forty grams.

## Conversion table

### grams to kilograms chart

For quick reference purposes, below is the conversion table you can use to convert from grams to kilograms

grams (g) kilograms (kg)
41 grams 0.041 kilograms
42 grams 0.042 kilograms
43 grams 0.043 kilograms
44 grams 0.044 kilograms
45 grams 0.045 kilograms
46 grams 0.046 kilograms
47 grams 0.047 kilograms
48 grams 0.048 kilograms
49 grams 0.049 kilograms
50 grams 0.05 kilograms